/**
 * @license
 * Copyright 2017 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */

import {NDArrayMath} from '../../math/math';
import {SummedTensorArrayMap, TensorArrayMap} from '../tensor_array_map';

/**
 * @hidden
 */
export abstract class Operation {
  abstract feedForward(math: NDArrayMath, inferenceArrays: TensorArrayMap):
      void;

  abstract backProp(
      math: NDArrayMath, inferenceArrays: TensorArrayMap,
      gradientArrays: SummedTensorArrayMap): void;

  disposeTransientArrays(
      inferenceArrays: TensorArrayMap, gradientArrays: SummedTensorArrayMap) {}

  dispose() {}
}
